# -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""
#第一梯
x=20
y=10
z=x+y
print("z")
a=3.14
b=2.718
c=a*b
print(c)
print("第三")
name="liutao"
name_list=list(name)
fist_char=name_list[0]
sub_char=name_list[1:5]
upper_name=name.upper()
print(fist_char)
print(sub_char)
print(upper_name)
#第三题
print("第四")
numbers=[]
for i in range(1,11):
 numbers.append(i)
numbers_4_3=numbers
numbers_4_3[4]=100
print(numbers)
#五
print("第五")
colors=("","","")
colors=list(colors)
colors.append("YELLOW")
colors[1]="blue"
colors=tuple(colors)
print(colors)
print("第三")